Eria, Blight Sorceress

When Eria enters the battlefield, you lose the game unless you pay {3}{p/b}{p/b}.
{0}: Cast target instant, sorcery, artifact, enchantment, or creature from a graveyard, replacing its cost with: {p/b}{p/b}{p/b}.
{t}: Deal 6 damage divided among any number of creatures or players, but each target may only receive up to 1 damage, and one target must be yourself.